Abstract
Sorghum cv. Kafir 60 A (photoperiod-insensitive) and I.S. 3691 (photosensitive) are used in India to produce hybrid seeds, but flowering in the 2 cv. is not synchronized and pollination is effected artificially. In the studies reported, 1-month-old plants of both cv. were subjected for 1 h to fluorescent light at midnight for (a) 10 or (b) 17 nights. In both cv. ear emergence in the plants under (a) and (b) was accelerated, compared with control plants not subjected to fluorescent light. Time to reach 50% ear emergence in control plants was earlier by about 10 days in I.S. 3691 than in Kafir 60 A, but this difference was decreased to 3 days in plants under (a) or (b). The plant height and flag leaf area were also markedly increased in plants under (a) and (b). In another trial with cv. Karad Local, ear emergence in plants under the treatments (a) and (b) was delayed, but grain yields were markedly increased. It was thought that flowering in sorghum cv., which differ in response to photoperiod, can be synchronized by 1-h photoperiods given at night.-M.S.M.
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Claims 6
Claim · model-written summary
Night interruptions accelerated ear emergence in Kafir 60 A.
- Material
- Kafir 60 Ae1
- Treatment
- fluorescent lighte0
- Outcome
- ear emergencee0
- Direction
- acceleratede0
- Comparator
- control plants not subjected to fluorescent lighte0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum varieties”
e0“In both cv. ear emergence in the plants under (a) and (b) was accelerated, compared with control plants not subjected to fluorescent light.”
e1“Sorghum cv. Kafir 60 A (photoperiod-insensitive) and I.S. 3691 (photosensitive)”
Claim · model-written summary
Night interruptions accelerated ear emergence in I.S. 3691.
- Material
- I.S. 3691e1
- Treatment
- fluorescent lighte0
- Outcome
- ear emergencee0
- Direction
- acceleratede0
- Comparator
- control plants not subjected to fluorescent lighte0
Not reportedTaxon
Verbatim
e0“In both cv. ear emergence in the plants under (a) and (b) was accelerated, compared with control plants not subjected to fluorescent light.”
e1“I.S. 3691 (photosensitive)”
Claim · model-written summary
Night interruptions reduced the difference in time to 50% ear emergence between cultivars from about 10 to 3 days.
- Treatment
- under (a) or (b)e0
- Outcome
- differencee0
- Direction
- decreasede0
- Value
- 3 dayse0
- Qualifier
- about 10 dayse0
- Comparator
- control plantse0
Not reportedTaxon
Verbatim
e0“Time to reach 50% ear emergence in control plants was earlier by about 10 days in I.S. 3691 than in Kafir 60 A, but this difference was decreased to 3 days in plants under (a) or (b).”
Claim · model-written summary
Night interruptions markedly increased plant height and flag leaf area in the two cultivars.
Not reportedTaxonComparator
Verbatim
e0“The plant height and flag leaf area were also markedly increased in plants under (a) and (b).”
Claim · model-written summary
Night interruptions delayed ear emergence in Karad Local.
Not reportedTaxonComparator
Verbatim
e0“In another trial with cv. Karad Local, ear emergence in plants under the treatments (a) and (b) was delayed, but grain yields were markedly increased.”
Claim · model-written summary
Night interruptions markedly increased grain yields in Karad Local.
- Material
- Karad Locale0
- Treatment
- treatments (a) and (b)e0
- Outcome
- grain yieldse0
- Direction
- markedly increasede0
Not reportedTaxonComparator
Verbatim
e0“In another trial with cv. Karad Local, ear emergence in plants under the treatments (a) and (b) was delayed, but grain yields were markedly increased.”
The same questions in other papers
light · growth · SorghumPositive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
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2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.